| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * strings.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2004 The SquirrelMail Project Team |
| 7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
| 8 | * |
| 9 | * This code provides various string manipulation functions that are |
| 10 | * used by the rest of the Squirrelmail code. |
| 11 | * |
| 12 | * @version $Id$ |
| 13 | * @package squirrelmail |
| 14 | */ |
| 15 | |
| 16 | /** |
| 17 | * SquirrelMail version number -- DO NOT CHANGE |
| 18 | */ |
| 19 | global $version; |
| 20 | $version = '1.5.1 [CVS]'; |
| 21 | |
| 22 | /** |
| 23 | * SquirrelMail internal version number -- DO NOT CHANGE |
| 24 | * $sm_internal_version = array (release, major, minor) |
| 25 | */ |
| 26 | global $SQM_INTERNAL_VERSION; |
| 27 | $SQM_INTERNAL_VERSION = array(1,5,1); |
| 28 | |
| 29 | /** |
| 30 | * There can be a circular issue with includes, where the $version string is |
| 31 | * referenced by the include of global.php, etc. before it's defined. |
| 32 | * For that reason, bring in global.php AFTER we define the version strings. |
| 33 | */ |
| 34 | require_once(SM_PATH . 'functions/global.php'); |
| 35 | |
| 36 | /** |
| 37 | * Appends citation markers to the string. |
| 38 | * Also appends a trailing space. |
| 39 | * |
| 40 | * @author Justus Pendleton |
| 41 | * |
| 42 | * @param string str The string to append to |
| 43 | * @param int citeLevel the number of markers to append |
| 44 | * @return null |
| 45 | */ |
| 46 | function sqMakeCite (&$str, $citeLevel) { |
| 47 | for ($i = 0; $i < $citeLevel; $i++) { |
| 48 | $str .= '>'; |
| 49 | } |
| 50 | if ($citeLevel != 0) { |
| 51 | $str .= ' '; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Create a newline in the string, adding citation |
| 57 | * markers to the newline as necessary. |
| 58 | * |
| 59 | * @author Justus Pendleton |
| 60 | * |
| 61 | * @param string str the string to make a newline in |
| 62 | * @param int citeLevel the citation level the newline is at |
| 63 | * @param int column starting column of the newline |
| 64 | * @return null |
| 65 | */ |
| 66 | function sqMakeNewLine (&$str, $citeLevel, &$column) { |
| 67 | $str .= "\n"; |
| 68 | $column = 0; |
| 69 | if ($citeLevel > 0) { |
| 70 | sqMakeCite ($str, $citeLevel); |
| 71 | $column = $citeLevel + 1; |
| 72 | } else { |
| 73 | $column = 0; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Checks for spaces in strings - only used if PHP doesn't have native ctype support |
| 79 | * |
| 80 | * @author Tomas Kuliavas |
| 81 | * |
| 82 | * You might be able to rewrite the function by adding short evaluation form. |
| 83 | * |
| 84 | * possible problems: |
| 85 | * - iso-2022-xx charsets - hex 20 might be part of other symbol. I might |
| 86 | * be wrong. 0x20 is not used in iso-2022-jp. I haven't checked iso-2022-kr |
| 87 | * and iso-2022-cn mappings. |
| 88 | * |
| 89 | * - no-break space ( ) - it is 8bit symbol, that depends on charset. |
| 90 | * there are at least three different charset groups that have nbsp in |
| 91 | * different places. |
| 92 | * |
| 93 | * I don't see any charset/nbsp options in php ctype either. |
| 94 | * |
| 95 | * @param string $string tested string |
| 96 | * @return bool true when only whitespace symbols are present in test string |
| 97 | */ |
| 98 | function sm_ctype_space($string) { |
| 99 | if ( preg_match('/^[\x09-\x0D]|^\x20/', $string) || $string=='') { |
| 100 | return true; |
| 101 | } else { |
| 102 | return false; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Wraps text at $wrap characters. While sqWordWrap takes |
| 108 | * a single line of text and wraps it, this function works |
| 109 | * on the entire corpus at once, this allows it to be a little |
| 110 | * bit smarter and when and how to wrap. |
| 111 | * |
| 112 | * @author Justus Pendleton |
| 113 | * |
| 114 | * @param string body the entire body of text |
| 115 | * @param int wrap the maximum line length |
| 116 | * @return string the wrapped text |
| 117 | */ |
| 118 | function &sqBodyWrap (&$body, $wrap) { |
| 119 | //check for ctype support, and fake it if it doesn't exist |
| 120 | if (!function_exists('ctype_space')) { |
| 121 | function ctype_space ($string) { |
| 122 | return sm_ctype_space($string); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | // the newly wrapped text |
| 127 | $outString = ''; |
| 128 | // current column since the last newline in the outstring |
| 129 | $outStringCol = 0; |
| 130 | $length = strlen($body); |
| 131 | // where we are in the original string |
| 132 | $pos = 0; |
| 133 | // the number of >>> citation markers we are currently at |
| 134 | $citeLevel = 0; |
| 135 | |
| 136 | // the main loop, whenever we start a newline of input text |
| 137 | // we start from here |
| 138 | while ($pos < $length) { |
| 139 | // we're at the beginning of a line, get the new cite level |
| 140 | $newCiteLevel = 0; |
| 141 | |
| 142 | while (($pos < $length) && ($body{$pos} == '>')) { |
| 143 | $newCiteLevel++; |
| 144 | $pos++; |
| 145 | |
| 146 | // skip over any spaces interleaved among the cite markers |
| 147 | while (($pos < $length) && ($body{$pos} == ' ')) { |
| 148 | |
| 149 | $pos++; |
| 150 | |
| 151 | } |
| 152 | if ($pos >= $length) { |
| 153 | break; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | // special case: if this is a blank line then maintain it |
| 158 | // (i.e. try to preserve original paragraph breaks) |
| 159 | // unless they occur at the very beginning of the text |
| 160 | if (($body{$pos} == "\n" ) && (strlen($outString) != 0)) { |
| 161 | $outStringLast = $outString{strlen($outString) - 1}; |
| 162 | if ($outStringLast != "\n") { |
| 163 | $outString .= "\n"; |
| 164 | } |
| 165 | sqMakeCite ($outString, $newCiteLevel); |
| 166 | $outString .= "\n"; |
| 167 | $pos++; |
| 168 | $outStringCol = 0; |
| 169 | continue; |
| 170 | } |
| 171 | |
| 172 | // if the cite level has changed, then start a new line |
| 173 | // with the new cite level. |
| 174 | if (($citeLevel != $newCiteLevel) && ($pos > ($newCiteLevel + 1)) && ($outStringCol != 0)) { |
| 175 | sqMakeNewLine ($outString, 0, $outStringCol); |
| 176 | } |
| 177 | |
| 178 | $citeLevel = $newCiteLevel; |
| 179 | |
| 180 | // prepend the quote level if necessary |
| 181 | if ($outStringCol == 0) { |
| 182 | sqMakeCite ($outString, $citeLevel); |
| 183 | // if we added a citation then move the column |
| 184 | // out by citelevel + 1 (the cite markers + the space) |
| 185 | $outStringCol = $citeLevel + ($citeLevel ? 1 : 0); |
| 186 | } else if ($outStringCol > $citeLevel) { |
| 187 | // not a cite and we're not at the beginning of a line |
| 188 | // in the output. add a space to separate the new text |
| 189 | // from previous text. |
| 190 | $outString .= ' '; |
| 191 | $outStringCol++; |
| 192 | } |
| 193 | |
| 194 | // find the next newline -- we don't want to go further than that |
| 195 | $nextNewline = strpos ($body, "\n", $pos); |
| 196 | if ($nextNewline === FALSE) { |
| 197 | $nextNewline = $length; |
| 198 | } |
| 199 | |
| 200 | // Don't wrap unquoted lines at all. For now the textarea |
| 201 | // will work fine for this. Maybe revisit this later though |
| 202 | // (for completeness more than anything else, I think) |
| 203 | if ($citeLevel == 0) { |
| 204 | $outString .= substr ($body, $pos, ($nextNewline - $pos)); |
| 205 | $outStringCol = $nextNewline - $pos; |
| 206 | if ($nextNewline != $length) { |
| 207 | sqMakeNewLine ($outString, 0, $outStringCol); |
| 208 | } |
| 209 | $pos = $nextNewline + 1; |
| 210 | continue; |
| 211 | } |
| 212 | /** |
| 213 | * Set this to false to stop appending short strings to previous lines |
| 214 | */ |
| 215 | $smartwrap = true; |
| 216 | // inner loop, (obviously) handles wrapping up to |
| 217 | // the next newline |
| 218 | while ($pos < $nextNewline) { |
| 219 | // skip over initial spaces |
| 220 | while (($pos < $nextNewline) && (ctype_space ($body{$pos}))) { |
| 221 | $pos++; |
| 222 | } |
| 223 | // if this is a short line then just append it and continue outer loop |
| 224 | if (($outStringCol + $nextNewline - $pos) <= ($wrap - $citeLevel - 1) ) { |
| 225 | // if this is the final line in the input string then include |
| 226 | // any trailing newlines |
| 227 | // echo substr($body,$pos,$wrap). "<br />"; |
| 228 | if (($nextNewline + 1 == $length) && ($body{$nextNewline} == "\n")) { |
| 229 | $nextNewline++; |
| 230 | } |
| 231 | |
| 232 | // trim trailing spaces |
| 233 | $lastRealChar = $nextNewline; |
| 234 | while (($lastRealChar > $pos && $lastRealChar < $length) && (ctype_space ($body{$lastRealChar}))) { |
| 235 | $lastRealChar--; |
| 236 | } |
| 237 | // decide if appending the short string is what we want |
| 238 | if (($nextNewline < $length && $body{$nextNewline} == "\n") && |
| 239 | isset($lastRealChar)) { |
| 240 | $mypos = $pos; |
| 241 | //check the first word: |
| 242 | while (($mypos < $length) && ($body{$mypos} == '>')) { |
| 243 | $mypos++; |
| 244 | // skip over any spaces interleaved among the cite markers |
| 245 | $oldpos = $mypos; |
| 246 | while (($mypos < $length) && ($body{$mypos} == ' ')) { |
| 247 | $mypos++; |
| 248 | } |
| 249 | } |
| 250 | /* |
| 251 | $ldnspacecnt = 0; |
| 252 | if ($mypos == $nextNewline+1) { |
| 253 | while (($mypos < $length) && ($body{$mypos} == ' ')) { |
| 254 | $ldnspacecnt++; |
| 255 | } |
| 256 | } |
| 257 | */ |
| 258 | |
| 259 | $firstword = substr($body,$mypos,strpos($body,' ',$mypos) - $mypos); |
| 260 | //if ($dowrap || $ldnspacecnt > 1 || ($firstword && ( |
| 261 | if (!$smartwrap || $firstword && ( |
| 262 | $firstword{0} == '-' || |
| 263 | $firstword{0} == '+' || |
| 264 | $firstword{0} == '*' || |
| 265 | $firstword{0} == strtoupper($firstword{0}) || |
| 266 | strpos($firstword,':'))) { |
| 267 | $outString .= substr($body,$pos,($lastRealChar - $pos+1)); |
| 268 | $outStringCol += ($lastRealChar - $pos); |
| 269 | sqMakeNewLine($outString,$citeLevel,$outStringCol); |
| 270 | $nextNewline++; |
| 271 | $pos = $nextNewline; |
| 272 | $outStringCol--; |
| 273 | continue; |
| 274 | } |
| 275 | |
| 276 | } |
| 277 | |
| 278 | $outString .= substr ($body, $pos, ($lastRealChar - $pos + 1)); |
| 279 | $outStringCol += ($lastRealChar - $pos); |
| 280 | $pos = $nextNewline + 1; |
| 281 | continue; |
| 282 | } |
| 283 | |
| 284 | $eol = $pos + $wrap - $citeLevel - $outStringCol; |
| 285 | // eol is the tentative end of line. |
| 286 | // look backwards for there for a whitespace to break at. |
| 287 | // if it's already less than our current position then |
| 288 | // our current line is already too long, break immediately |
| 289 | // and restart outer loop |
| 290 | if ($eol <= $pos) { |
| 291 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
| 292 | continue; |
| 293 | } |
| 294 | |
| 295 | // start looking backwards for whitespace to break at. |
| 296 | $breakPoint = $eol; |
| 297 | while (($breakPoint > $pos) && (! ctype_space ($body{$breakPoint}))) { |
| 298 | $breakPoint--; |
| 299 | } |
| 300 | |
| 301 | // if we didn't find a breakpoint by looking backward then we |
| 302 | // need to figure out what to do about that |
| 303 | if ($breakPoint == $pos) { |
| 304 | // if we are not at the beginning then end this line |
| 305 | // and start a new loop |
| 306 | if ($outStringCol > ($citeLevel + 1)) { |
| 307 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
| 308 | continue; |
| 309 | } else { |
| 310 | // just hard break here. most likely we are breaking |
| 311 | // a really long URL. could also try searching |
| 312 | // forward for a break point, which is what Mozilla |
| 313 | // does. don't bother for now. |
| 314 | $breakPoint = $eol; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | // special case: maybe we should have wrapped last |
| 319 | // time. if the first breakpoint here makes the |
| 320 | // current line too long and there is already text on |
| 321 | // the current line, break and loop again if at |
| 322 | // beginning of current line, don't force break |
| 323 | $SLOP = 6; |
| 324 | if ((($outStringCol + ($breakPoint - $pos)) > ($wrap + $SLOP)) && ($outStringCol > ($citeLevel + 1))) { |
| 325 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
| 326 | continue; |
| 327 | } |
| 328 | |
| 329 | // skip newlines or whitespace at the beginning of the string |
| 330 | $substring = substr ($body, $pos, ($breakPoint - $pos)); |
| 331 | $substring = rtrim ($substring); // do rtrim and ctype_space have the same ideas about whitespace? |
| 332 | $outString .= $substring; |
| 333 | $outStringCol += strlen ($substring); |
| 334 | // advance past the whitespace which caused the wrap |
| 335 | $pos = $breakPoint; |
| 336 | while (($pos < $length) && (ctype_space ($body{$pos}))) { |
| 337 | $pos++; |
| 338 | } |
| 339 | if ($pos < $length) { |
| 340 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
| 341 | } |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | return $outString; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Wraps text at $wrap characters |
| 350 | * |
| 351 | * Has a problem with special HTML characters, so call this before |
| 352 | * you do character translation. |
| 353 | * |
| 354 | * Specifically, ' comes up as 5 characters instead of 1. |
| 355 | * This should not add newlines to the end of lines. |
| 356 | * |
| 357 | * @param string line the line of text to wrap, by ref |
| 358 | * @param int wrap the maximum line lenth |
| 359 | * @return void |
| 360 | */ |
| 361 | function sqWordWrap(&$line, $wrap) { |
| 362 | global $languages, $squirrelmail_language; |
| 363 | |
| 364 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 365 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) { |
| 366 | if (mb_detect_encoding($line) != 'ASCII') { |
| 367 | $line = $languages[$squirrelmail_language]['XTRA_CODE']('wordwrap', $line, $wrap); |
| 368 | return; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | ereg("^([\t >]*)([^\t >].*)?$", $line, $regs); |
| 373 | $beginning_spaces = $regs[1]; |
| 374 | if (isset($regs[2])) { |
| 375 | $words = explode(' ', $regs[2]); |
| 376 | } else { |
| 377 | $words = ''; |
| 378 | } |
| 379 | |
| 380 | $i = 0; |
| 381 | $line = $beginning_spaces; |
| 382 | |
| 383 | while ($i < count($words)) { |
| 384 | /* Force one word to be on a line (minimum) */ |
| 385 | $line .= $words[$i]; |
| 386 | $line_len = strlen($beginning_spaces) + strlen($words[$i]) + 2; |
| 387 | if (isset($words[$i + 1])) |
| 388 | $line_len += strlen($words[$i + 1]); |
| 389 | $i ++; |
| 390 | |
| 391 | /* Add more words (as long as they fit) */ |
| 392 | while ($line_len < $wrap && $i < count($words)) { |
| 393 | $line .= ' ' . $words[$i]; |
| 394 | $i++; |
| 395 | if (isset($words[$i])) |
| 396 | $line_len += strlen($words[$i]) + 1; |
| 397 | else |
| 398 | $line_len += 1; |
| 399 | } |
| 400 | |
| 401 | /* Skip spaces if they are the first thing on a continued line */ |
| 402 | while (!isset($words[$i]) && $i < count($words)) { |
| 403 | $i ++; |
| 404 | } |
| 405 | |
| 406 | /* Go to the next line if we have more to process */ |
| 407 | if ($i < count($words)) { |
| 408 | $line .= "\n"; |
| 409 | } |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Does the opposite of sqWordWrap() |
| 415 | * @param string body the text to un-wordwrap |
| 416 | * @return void |
| 417 | */ |
| 418 | function sqUnWordWrap(&$body) { |
| 419 | global $squirrelmail_language; |
| 420 | |
| 421 | if ($squirrelmail_language == 'ja_JP') { |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | $lines = explode("\n", $body); |
| 426 | $body = ''; |
| 427 | $PreviousSpaces = ''; |
| 428 | $cnt = count($lines); |
| 429 | for ($i = 0; $i < $cnt; $i ++) { |
| 430 | preg_match("/^([\t >]*)([^\t >].*)?$/", $lines[$i], $regs); |
| 431 | $CurrentSpaces = $regs[1]; |
| 432 | if (isset($regs[2])) { |
| 433 | $CurrentRest = $regs[2]; |
| 434 | } else { |
| 435 | $CurrentRest = ''; |
| 436 | } |
| 437 | |
| 438 | if ($i == 0) { |
| 439 | $PreviousSpaces = $CurrentSpaces; |
| 440 | $body = $lines[$i]; |
| 441 | } else if (($PreviousSpaces == $CurrentSpaces) /* Do the beginnings match */ |
| 442 | && (strlen($lines[$i - 1]) > 65) /* Over 65 characters long */ |
| 443 | && strlen($CurrentRest)) { /* and there's a line to continue with */ |
| 444 | $body .= ' ' . $CurrentRest; |
| 445 | } else { |
| 446 | $body .= "\n" . $lines[$i]; |
| 447 | $PreviousSpaces = $CurrentSpaces; |
| 448 | } |
| 449 | } |
| 450 | $body .= "\n"; |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * If $haystack is a full mailbox name and $needle is the mailbox |
| 455 | * separator character, returns the last part of the mailbox name. |
| 456 | * |
| 457 | * @param string haystack full mailbox name to search |
| 458 | * @param string needle the mailbox separator character |
| 459 | * @return string the last part of the mailbox name |
| 460 | */ |
| 461 | function readShortMailboxName($haystack, $needle) { |
| 462 | |
| 463 | if ($needle == '') { |
| 464 | $elem = $haystack; |
| 465 | } else { |
| 466 | $parts = explode($needle, $haystack); |
| 467 | $elem = array_pop($parts); |
| 468 | while ($elem == '' && count($parts)) { |
| 469 | $elem = array_pop($parts); |
| 470 | } |
| 471 | } |
| 472 | return( $elem ); |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * php_self |
| 477 | * |
| 478 | * Creates an URL for the page calling this function, using either the PHP global |
| 479 | * REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. |
| 480 | * |
| 481 | * @return string the complete url for this page |
| 482 | */ |
| 483 | function php_self () { |
| 484 | if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) { |
| 485 | return $req_uri; |
| 486 | } |
| 487 | |
| 488 | if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) { |
| 489 | |
| 490 | // need to add query string to end of PHP_SELF to match REQUEST_URI |
| 491 | // |
| 492 | if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) { |
| 493 | $php_self .= '?' . $query_string; |
| 494 | } |
| 495 | |
| 496 | return $php_self; |
| 497 | } |
| 498 | |
| 499 | return ''; |
| 500 | } |
| 501 | |
| 502 | |
| 503 | /** |
| 504 | * get_location |
| 505 | * |
| 506 | * Determines the location to forward to, relative to your server. |
| 507 | * This is used in HTTP Location: redirects. |
| 508 | * If this doesnt work correctly for you (although it should), you can |
| 509 | * remove all this code except the last two lines, and have it return |
| 510 | * the right URL for your site, something like: |
| 511 | * |
| 512 | * http://www.example.com/squirrelmail/ |
| 513 | * |
| 514 | * @return string the base url for this SquirrelMail installation |
| 515 | */ |
| 516 | function get_location () { |
| 517 | |
| 518 | global $imap_server_type; |
| 519 | |
| 520 | /* Get the path, handle virtual directories */ |
| 521 | if(strpos(php_self(), '?')) { |
| 522 | $path = substr(php_self(), 0, strpos(php_self(), '?')); |
| 523 | } else { |
| 524 | $path = php_self(); |
| 525 | } |
| 526 | $path = substr($path, 0, strrpos($path, '/')); |
| 527 | if ( sqgetGlobalVar('sq_base_url', $full_url, SQ_SESSION) ) { |
| 528 | return $full_url . $path; |
| 529 | } |
| 530 | |
| 531 | /* Check if this is a HTTPS or regular HTTP request. */ |
| 532 | $proto = 'http://'; |
| 533 | |
| 534 | /* |
| 535 | * If you have 'SSLOptions +StdEnvVars' in your apache config |
| 536 | * OR if you have HTTPS=on in your HTTP_SERVER_VARS |
| 537 | * OR if you are on port 443 |
| 538 | */ |
| 539 | $getEnvVar = getenv('HTTPS'); |
| 540 | if ((isset($getEnvVar) && !strcasecmp($getEnvVar, 'on')) || |
| 541 | (sqgetGlobalVar('HTTPS', $https_on, SQ_SERVER) && !strcasecmp($https_on, 'on')) || |
| 542 | (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER) && $server_port == 443)) { |
| 543 | $proto = 'https://'; |
| 544 | } |
| 545 | |
| 546 | /* Get the hostname from the Host header or server config. */ |
| 547 | if ( !sqgetGlobalVar('HTTP_HOST', $host, SQ_SERVER) || empty($host) ) { |
| 548 | if ( !sqgetGlobalVar('SERVER_NAME', $host, SQ_SERVER) || empty($host) ) { |
| 549 | $host = ''; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | $port = ''; |
| 554 | if (! strstr($host, ':')) { |
| 555 | if (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER)) { |
| 556 | if (($server_port != 80 && $proto == 'http://') || |
| 557 | ($server_port != 443 && $proto == 'https://')) { |
| 558 | $port = sprintf(':%d', $server_port); |
| 559 | } |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | /* this is a workaround for the weird macosx caching that |
| 564 | causes Apache to return 16080 as the port number, which causes |
| 565 | SM to bail */ |
| 566 | |
| 567 | if ($imap_server_type == 'macosx' && $port == ':16080') { |
| 568 | $port = ''; |
| 569 | } |
| 570 | |
| 571 | /* Fallback is to omit the server name and use a relative */ |
| 572 | /* URI, although this is not RFC 2616 compliant. */ |
| 573 | $full_url = ($host ? $proto . $host . $port : ''); |
| 574 | sqsession_register($full_url, 'sq_base_url'); |
| 575 | return $full_url . $path; |
| 576 | } |
| 577 | |
| 578 | |
| 579 | /** |
| 580 | * Encrypts password |
| 581 | * |
| 582 | * These functions are used to encrypt the password before it is |
| 583 | * stored in a cookie. The encryption key is generated by |
| 584 | * OneTimePadCreate(); |
| 585 | * |
| 586 | * @param string string the (password)string to encrypt |
| 587 | * @param string epad the encryption key |
| 588 | * @return string the base64-encoded encrypted password |
| 589 | */ |
| 590 | function OneTimePadEncrypt ($string, $epad) { |
| 591 | $pad = base64_decode($epad); |
| 592 | $encrypted = ''; |
| 593 | for ($i = 0; $i < strlen ($string); $i++) { |
| 594 | $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); |
| 595 | } |
| 596 | |
| 597 | return base64_encode($encrypted); |
| 598 | } |
| 599 | |
| 600 | /** |
| 601 | * Decrypts a password from the cookie |
| 602 | * |
| 603 | * Decrypts a password from the cookie, encrypted by OneTimePadEncrypt. |
| 604 | * This uses the encryption key that is stored in the session. |
| 605 | * |
| 606 | * @param string string the string to decrypt |
| 607 | * @param string epad the encryption key from the session |
| 608 | * @return string the decrypted password |
| 609 | */ |
| 610 | function OneTimePadDecrypt ($string, $epad) { |
| 611 | $pad = base64_decode($epad); |
| 612 | $encrypted = base64_decode ($string); |
| 613 | $decrypted = ''; |
| 614 | for ($i = 0; $i < strlen ($encrypted); $i++) { |
| 615 | $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); |
| 616 | } |
| 617 | |
| 618 | return $decrypted; |
| 619 | } |
| 620 | |
| 621 | |
| 622 | /** |
| 623 | * Randomizes the mt_rand() function. |
| 624 | * |
| 625 | * Toss this in strings or integers and it will seed the generator |
| 626 | * appropriately. With strings, it is better to get them long. |
| 627 | * Use md5() to lengthen smaller strings. |
| 628 | * |
| 629 | * @param mixed val a value to seed the random number generator |
| 630 | * @return void |
| 631 | */ |
| 632 | function sq_mt_seed($Val) { |
| 633 | /* if mt_getrandmax() does not return a 2^n - 1 number, |
| 634 | this might not work well. This uses $Max as a bitmask. */ |
| 635 | $Max = mt_getrandmax(); |
| 636 | |
| 637 | if (! is_int($Val)) { |
| 638 | $Val = crc32($Val); |
| 639 | } |
| 640 | |
| 641 | if ($Val < 0) { |
| 642 | $Val *= -1; |
| 643 | } |
| 644 | |
| 645 | if ($Val = 0) { |
| 646 | return; |
| 647 | } |
| 648 | |
| 649 | mt_srand(($Val ^ mt_rand(0, $Max)) & $Max); |
| 650 | } |
| 651 | |
| 652 | |
| 653 | /** |
| 654 | * Init random number generator |
| 655 | * |
| 656 | * This function initializes the random number generator fairly well. |
| 657 | * It also only initializes it once, so you don't accidentally get |
| 658 | * the same 'random' numbers twice in one session. |
| 659 | * |
| 660 | * @return void |
| 661 | */ |
| 662 | function sq_mt_randomize() { |
| 663 | static $randomized; |
| 664 | |
| 665 | if ($randomized) { |
| 666 | return; |
| 667 | } |
| 668 | |
| 669 | /* Global. */ |
| 670 | sqgetGlobalVar('REMOTE_PORT', $remote_port, SQ_SERVER); |
| 671 | sqgetGlobalVar('REMOTE_ADDR', $remote_addr, SQ_SERVER); |
| 672 | sq_mt_seed((int)((double) microtime() * 1000000)); |
| 673 | sq_mt_seed(md5($remote_port . $remote_addr . getmypid())); |
| 674 | |
| 675 | /* getrusage */ |
| 676 | if (function_exists('getrusage')) { |
| 677 | /* Avoid warnings with Win32 */ |
| 678 | $dat = @getrusage(); |
| 679 | if (isset($dat) && is_array($dat)) { |
| 680 | $Str = ''; |
| 681 | foreach ($dat as $k => $v) |
| 682 | { |
| 683 | $Str .= $k . $v; |
| 684 | } |
| 685 | sq_mt_seed(md5($Str)); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | if(sqgetGlobalVar('UNIQUE_ID', $unique_id, SQ_SERVER)) { |
| 690 | sq_mt_seed(md5($unique_id)); |
| 691 | } |
| 692 | |
| 693 | $randomized = 1; |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * Creates encryption key |
| 698 | * |
| 699 | * Creates an encryption key for encrypting the password stored in the cookie. |
| 700 | * The encryption key itself is stored in the session. |
| 701 | * |
| 702 | * @param int length optional, length of the string to generate |
| 703 | * @return string the encryption key |
| 704 | */ |
| 705 | function OneTimePadCreate ($length=100) { |
| 706 | sq_mt_randomize(); |
| 707 | |
| 708 | $pad = ''; |
| 709 | for ($i = 0; $i < $length; $i++) { |
| 710 | $pad .= chr(mt_rand(0,255)); |
| 711 | } |
| 712 | |
| 713 | return base64_encode($pad); |
| 714 | } |
| 715 | |
| 716 | /** |
| 717 | * Returns a string showing the size of the message/attachment. |
| 718 | * |
| 719 | * @param int bytes the filesize in bytes |
| 720 | * @return string the filesize in human readable format |
| 721 | */ |
| 722 | function show_readable_size($bytes) { |
| 723 | $bytes /= 1024; |
| 724 | $type = 'k'; |
| 725 | |
| 726 | if ($bytes / 1024 > 1) { |
| 727 | $bytes /= 1024; |
| 728 | $type = 'M'; |
| 729 | } |
| 730 | |
| 731 | if ($bytes < 10) { |
| 732 | $bytes *= 10; |
| 733 | settype($bytes, 'integer'); |
| 734 | $bytes /= 10; |
| 735 | } else { |
| 736 | settype($bytes, 'integer'); |
| 737 | } |
| 738 | |
| 739 | return $bytes . '<small> ' . $type . '</small>'; |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * Generates a random string from the caracter set you pass in |
| 744 | * |
| 745 | * @param int size the size of the string to generate |
| 746 | * @param string chars a string containing the characters to use |
| 747 | * @param int flags a flag to add a specific set to the characters to use: |
| 748 | * Flags: |
| 749 | * 1 = add lowercase a-z to $chars |
| 750 | * 2 = add uppercase A-Z to $chars |
| 751 | * 4 = add numbers 0-9 to $chars |
| 752 | * @return string the random string |
| 753 | */ |
| 754 | function GenerateRandomString($size, $chars, $flags = 0) { |
| 755 | if ($flags & 0x1) { |
| 756 | $chars .= 'abcdefghijklmnopqrstuvwxyz'; |
| 757 | } |
| 758 | if ($flags & 0x2) { |
| 759 | $chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
| 760 | } |
| 761 | if ($flags & 0x4) { |
| 762 | $chars .= '0123456789'; |
| 763 | } |
| 764 | |
| 765 | if (($size < 1) || (strlen($chars) < 1)) { |
| 766 | return ''; |
| 767 | } |
| 768 | |
| 769 | sq_mt_randomize(); /* Initialize the random number generator */ |
| 770 | |
| 771 | $String = ''; |
| 772 | $j = strlen( $chars ) - 1; |
| 773 | while (strlen($String) < $size) { |
| 774 | $String .= $chars{mt_rand(0, $j)}; |
| 775 | } |
| 776 | |
| 777 | return $String; |
| 778 | } |
| 779 | |
| 780 | /** |
| 781 | * Escapes special characters for use in IMAP commands. |
| 782 | * |
| 783 | * @param string the string to escape |
| 784 | * @return string the escaped string |
| 785 | */ |
| 786 | function quoteimap($str) { |
| 787 | return preg_replace("/([\"\\\\])/", "\\\\$1", $str); |
| 788 | } |
| 789 | |
| 790 | /** |
| 791 | * Trims array |
| 792 | * |
| 793 | * Trims every element in the array, ie. remove the first char of each element |
| 794 | * @param array array the array to trim |
| 795 | */ |
| 796 | function TrimArray(&$array) { |
| 797 | foreach ($array as $k => $v) { |
| 798 | global $$k; |
| 799 | if (is_array($$k)) { |
| 800 | foreach ($$k as $k2 => $v2) { |
| 801 | $$k[$k2] = substr($v2, 1); |
| 802 | } |
| 803 | } else { |
| 804 | $$k = substr($v, 1); |
| 805 | } |
| 806 | |
| 807 | /* Re-assign back to array. */ |
| 808 | $array[$k] = $$k; |
| 809 | } |
| 810 | } |
| 811 | |
| 812 | /** |
| 813 | * Create compose link |
| 814 | * |
| 815 | * Returns a link to the compose-page, taking in consideration |
| 816 | * the compose_in_new and javascript settings. |
| 817 | * @param string url the URL to the compose page |
| 818 | * @param string text the link text, default "Compose" |
| 819 | * @return string a link to the compose page |
| 820 | */ |
| 821 | function makeComposeLink($url, $text = null, $target='') |
| 822 | { |
| 823 | global $compose_new_win,$javascript_on; |
| 824 | |
| 825 | if(!$text) { |
| 826 | $text = _("Compose"); |
| 827 | } |
| 828 | |
| 829 | |
| 830 | // if not using "compose in new window", make |
| 831 | // regular link and be done with it |
| 832 | if($compose_new_win != '1') { |
| 833 | return makeInternalLink($url, $text, $target); |
| 834 | } |
| 835 | |
| 836 | |
| 837 | // build the compose in new window link... |
| 838 | |
| 839 | |
| 840 | // if javascript is on, use onClick event to handle it |
| 841 | if($javascript_on) { |
| 842 | sqgetGlobalVar('base_uri', $base_uri, SQ_SESSION); |
| 843 | return '<a href="javascript:void(0)" onclick="comp_in_new(\''.$base_uri.$url.'\')">'. $text.'</a>'; |
| 844 | } |
| 845 | |
| 846 | |
| 847 | // otherwise, just open new window using regular HTML |
| 848 | return makeInternalLink($url, $text, '_blank'); |
| 849 | |
| 850 | } |
| 851 | |
| 852 | /** |
| 853 | * Print variable |
| 854 | * |
| 855 | * sm_print_r($some_variable, [$some_other_variable [, ...]]); |
| 856 | * |
| 857 | * Debugging function - does the same as print_r, but makes sure special |
| 858 | * characters are converted to htmlentities first. This will allow |
| 859 | * values like <some@email.address> to be displayed. |
| 860 | * The output is wrapped in <<pre>> and <</pre>> tags. |
| 861 | * |
| 862 | * @return void |
| 863 | */ |
| 864 | function sm_print_r() { |
| 865 | ob_start(); // Buffer output |
| 866 | foreach(func_get_args() as $var) { |
| 867 | print_r($var); |
| 868 | echo "\n"; |
| 869 | } |
| 870 | $buffer = ob_get_contents(); // Grab the print_r output |
| 871 | ob_end_clean(); // Silently discard the output & stop buffering |
| 872 | print '<pre>'; |
| 873 | print htmlentities($buffer); |
| 874 | print '</pre>'; |
| 875 | } |
| 876 | |
| 877 | /** |
| 878 | * version of fwrite which checks for failure |
| 879 | */ |
| 880 | function sq_fwrite($fp, $string) { |
| 881 | // write to file |
| 882 | $count = @fwrite($fp,$string); |
| 883 | // the number of bytes written should be the length of the string |
| 884 | if($count != strlen($string)) { |
| 885 | return FALSE; |
| 886 | } |
| 887 | |
| 888 | return $count; |
| 889 | } |
| 890 | |
| 891 | /** |
| 892 | * sq_get_html_translation_table |
| 893 | * |
| 894 | * Returns the translation table used by sq_htmlentities() |
| 895 | * |
| 896 | * @param integer $table html translation table. Possible values (without quotes): |
| 897 | * <ul> |
| 898 | * <li>HTML_ENTITIES - full html entities table defined by charset</li> |
| 899 | * <li>HTML_SPECIALCHARS - html special characters table</li> |
| 900 | * </ul> |
| 901 | * @param integer $quote_style quote encoding style. Possible values (without quotes): |
| 902 | * <ul> |
| 903 | * <li>ENT_COMPAT - (default) encode double quotes</li> |
| 904 | * <li>ENT_NOQUOTES - don't encode double or single quotes</li> |
| 905 | * <li>ENT_QUOTES - encode double and single quotes</li> |
| 906 | * </ul> |
| 907 | * @param string $charset charset used for encoding. default to us-ascii, 'auto' uses $default_charset global value. |
| 908 | * @return array html translation array |
| 909 | */ |
| 910 | function sq_get_html_translation_table($table,$quote_style=ENT_COMPAT,$charset='us-ascii') { |
| 911 | global $default_charset; |
| 912 | |
| 913 | if ($table == HTML_SPECIALCHARS) $charset='us-ascii'; |
| 914 | |
| 915 | // Start array with ampersand |
| 916 | $sq_html_ent_table = array( "&" => '&' ); |
| 917 | |
| 918 | // < and > |
| 919 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
| 920 | array("<" => '<', |
| 921 | ">" => '>') |
| 922 | ); |
| 923 | // double quotes |
| 924 | if ($quote_style == ENT_COMPAT) |
| 925 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
| 926 | array("\"" => '"') |
| 927 | ); |
| 928 | |
| 929 | // double and single quotes |
| 930 | if ($quote_style == ENT_QUOTES) |
| 931 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
| 932 | array("\"" => '"', |
| 933 | "'" => ''') |
| 934 | ); |
| 935 | |
| 936 | if ($charset=='auto') $charset=$default_charset; |
| 937 | |
| 938 | // add entities that depend on charset |
| 939 | switch($charset){ |
| 940 | case 'iso-8859-1': |
| 941 | include_once(SM_PATH . 'functions/htmlentities/iso-8859-1.php'); |
| 942 | break; |
| 943 | case 'utf-8': |
| 944 | include_once(SM_PATH . 'functions/htmlentities/utf-8.php'); |
| 945 | break; |
| 946 | case 'us-ascii': |
| 947 | default: |
| 948 | break; |
| 949 | } |
| 950 | // return table |
| 951 | return $sq_html_ent_table; |
| 952 | } |
| 953 | |
| 954 | /** |
| 955 | * sq_htmlentities |
| 956 | * |
| 957 | * Convert all applicable characters to HTML entities. |
| 958 | * Minimal php requirement - v.4.0.5 |
| 959 | * |
| 960 | * @param string $string string that has to be sanitized |
| 961 | * @param integer $quote_style quote encoding style. Possible values (without quotes): |
| 962 | * <ul> |
| 963 | * <li>ENT_COMPAT - (default) encode double quotes</li> |
| 964 | * <li>ENT_NOQUOTES - don't encode double or single quotes</li> |
| 965 | * <li>ENT_QUOTES - encode double and single quotes</li> |
| 966 | * </ul> |
| 967 | * @param string $charset charset used for encoding. defaults to 'us-ascii', 'auto' uses $default_charset global value. |
| 968 | * @return string sanitized string |
| 969 | */ |
| 970 | function sq_htmlentities($string,$quote_style=ENT_COMPAT,$charset='us-ascii') { |
| 971 | // get translation table |
| 972 | $sq_html_ent_table=sq_get_html_translation_table(HTML_ENTITIES,$quote_style,$charset); |
| 973 | // convert characters |
| 974 | return str_replace(array_keys($sq_html_ent_table),array_values($sq_html_ent_table),$string); |
| 975 | } |
| 976 | |
| 977 | $PHP_SELF = php_self(); |
| 978 | ?> |